Process for attaching composition soles



MayZ, 1929. o. BRocKMAN PROCESS FOR ATTAOHING COMPOSITION SOLES Filed March 8, 1926 @@OQOOOOOOv QOOOOOOOO@ OOOOOOOOOTQJ @OOOOOOOQ @@@OOOQQ @@@QOOOO d OOOOO@ Patented May 28, 1929.

UNITED srrs PATNT FFIQE.

PROCESS FOR ATTACIIING COMPOSITION SOLES.

Application led March 8, 1926. Serial No. 93,304.

This invention relates to a process for at.- taching rubber soles to leather shoes. j

An object ot' this invention is to provide an easy and quick method whereby rubber soles may be attached to leather or other kinds ol soles without the use of stitching or nails.

Another object is to so prepare the rubber sole that in order for the purchaser to use the same he need only remove an outer -covering 1o in order to apply the same to the leather sole.

Other objects and advantages will hereinafter appear. i y

The invention is illustrated in the acco panying drawings, in which: Figure l isa top 'plan of the sole with a fragmentary section removed exposing the construction of the sole ,i

Figure 2 is a bottom plan of the sole; and Figure 3 is a perspective of a shoe with the rubber sole partly attached.

The sole as shown in Figure l comprises a rubber or composition sole 1 with its top surface 2 roughened and applied tothfis surface a coating of rubber cement 3 which in turn" is covered with a thin layer-vof new unv-ulv canized rubber gum 4. Over the whole is' placed an air proof material 5 which prevents the attaching substance from losing its effectiveness by, contact`with air. Iigure 2 merely shows the bottom of sole 1. Figure 3 'shows the sole l partly attached to the leather sole 6.

In operation the material 5 is removed and the exposed surface 4 applied firmly to the leather sole 6. The action of the rubber cement and new unvulcanized rubber gum when exposed to the air causes the rubber sole to adhere'to the leather sole 6, so firmly that the sole will not come olf when the shoe is worn.

Having specifically described the invention the following claim is herewith appended, thev reservation being made, however, that the invention is susceptible of many modifications and adaptations within the scope of said claim.

What I claim is v The process of securing a composition sole to a leather sole which consists in completely roughening one surface of the composition sole, coating said roughened face with rubber cen1ent,'applying a layer of unvulcanized rubber free vfrom vulcanizing` materialto the `coating of cement, and pressing the resultant compound layer sole into adhesive contact with the leather vsole and with the unvulcanized rubber layer, still free from vul- ,canizing material, directly applied to said leather sole. v

In testimony whereof I atlix my signature.

OSCAR BROCKMAN. 

